{"product_id":"honeywell-xf821a-analog-input-module","title":"Honeywell XF821A Analog Input Module","description":"\u003cp\u003eConfigured for analog process signal acquisition in industrial control platforms, the \u003cstrong\u003eHoneywell XF821A\u003c\/strong\u003e (\u003cstrong\u003eXF821A\u003c\/strong\u003e Analog Input Module) provides direct physical\/electrical execution for continuous sensor monitoring and loop integration.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eXF821A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA \/ Netherlands\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.0 kg (Shipping Weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard System Rack Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard Loop Powered \/ Internal Rail Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog process signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and Cold Junction Compensation\u003c\/h3\u003e\n\u003cp\u003eOperating within process control and DCS architectures, the module incorporates robust channel-to-channel isolation barriers to eliminate ground loops and prevent common-mode voltage interference across field circuits. Advanced cold junction compensation (CJC) reference circuitry ensures high measurement accuracy for thermocouple and analog voltage loops, while 4-20 mA HART loop protocol compatibility enables seamless digital parameter transmission alongside traditional analog values.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What field signal types are compatible with this analog input card?\u003c\/p\u003e\n\u003cp\u003eA: The module is engineered to accept standard process signals, including 4-20 mA loops with HART communication capabilities and direct analog voltage inputs.\u003c\/p\u003e\n\u003cp\u003eQ: Can this analog input module be hot-swapped during live system operation?\u003c\/p\u003e\n\u003cp\u003eA: No, extracting or inserting the module on an energized rack backplane can induce signal spikes or interrupt active control loops. System power must be isolated prior to servicing.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module prevent signal interference between adjacent channels?\u003c\/p\u003e\n\u003cp\u003eA: Integrated channel-to-channel galvanic isolation blocks high-frequency electrical noise and suppresses crosstalk across multi-channel measurement circuits.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the module securely into its designated enclosure or subrack slot, aligning backplane connectors to prevent pin damage.\u003c\/li\u003e\n\u003cli\u003eTerminate incoming analog field wiring using shielded twisted-pair cables to protect against electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eConnect signal shield drain wires directly to the system instrumentation ground bar at a single reference point.\u003c\/li\u003e\n\u003cli\u003eVerify that loop power supply voltage and signal scaling parameters are properly configured before commissioning the channel inputs.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":66882558558323,"sku":"XF821A","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/XF821A_Cocoai_05ccd280-7bd9-4a3e-8380-fb057f431436.jpg?v=1792140920","url":"https:\/\/www.dcssupplier.com\/ar\/products\/honeywell-xf821a-analog-input-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}